<!DOCTYPE html>
<html lang="zh-CN">
    <head>
        <meta charset="UTF-8" />
        <title>13_盒子模型-默认样式</title>

        <style>
            /* 下划线、字体颜色、鼠标小手 */
            a {
                text-decoration: none;
                color: #666;
            }

            /*  */
            h1 {
                font-size: 16px;
                font-weight: lighter;
            }

            p {
                margin-top: 0;
                margin-bottom: 0;
            }

            ul {
                margin: 0;
                padding: 0;
            }
            ul li {
                list-style: none;
            }

            div {
                width: 500px;
                height: 300px;
                background-color: aqua;
            }

            body {
                margin: 0;
                padding: 0;
            }
        </style>
    </head>
    <body>
        <a href="">尚硅谷</a>

        <h1>下硅谷</h1>

        <p>中硅谷</p>

        <ul>
            <li>1</li>
            <li>1</li>
            <li>1</li>
            <li>1</li>
        </ul>

        <div></div>
    </body>
</html>